基基础专业/高建团海1业高 省外建 销 专业/高建团海1业高新型扩底灌注桩在工程中的应用马永贺广东中科华大工程技术检测有限公司 广东广州 511458摘 要 :在对预制桩、灌 注 桩 (旋挖、冲孔、钻 孔 )、人工挖孔桩、新型扩底灌注桩等不同桩型的特点进行比较的基础
上 ,介绍了新型扩底灌注桩的施工工艺和施工流程,并分别选择了3组普通灌注桩和新型扩底灌注桩进行抗拔试桩。试
桩结果表明,新型扩底灌注桩具有“承载力大、变形小”的特点,具有较好的力学性能。工程实践表明,新型扩底灌
注桩具有工艺简单、质量可靠、成本低廉等特点,具有广阔的应用前景,对同行业施工具有很好的参考价值。关键词:新型扩底灌注桩;试桩;施工工艺;力学性能中图分类号:T U7 5 3 文献标志码:A 文章 编 号:10〇4 -10〇1(2 〇2 〇)〇6 -〇9 2 2-03 D O I: 10.14144/j.c n k i.j z s g.2020.06.006团■■2发第办5发期4 期 庹 办 高3浙 海市■3 工办开5<发4<■2办第3 上发23 浙发50 外42办霸-3: 省期55期卷 发4 外4-发433霸发4-团 ) YongheU DrahWJah EdJahPt ADrWr Kt7s /JNB RsW LB UDrahcdJDB UDrahWJah Jqq% J MB /d!arM p 7 s O r o s: Based on the comparison of the characteristics of different pile types, such as precast pile, cast-in-place pile
(rotary excavation, punching, drilling), manual hole digging pile and new type cast-in-place pile with enlarged bottom,
this paper introduces the construction technology and construction process of new type cast-in-place pile with enlarged
bottom, and selects three groups of common cast-in-place pile and new type cast-in-place pile with enlarged bottom
for pull-out test, respectively. The test results show that the new type cast-in-place pile with enlarged bottom has the
characteristics of "great bearing capacity and small deformation", and has better mechanical properties. The engineering
practice shows that the new type cast-in-place pile with enlarged bottom has the characteristics of simple technology,
reliable quality and low c o s t. It has a broad application prospect and a good reference value for the same industry
construction.总 3 市 浙 期 霸 : 开: new type cast-in-place pile with enlarged bottom; test pile; construction technology; mechanical properties?CMD?2 u ? ?? ? ?®